Byasa polyeuctes polyeuctes (Doubleday, 1942)
The Common Windmill – ผีเสื้อหางตุ้มธรรมดา
![Bhutanitis lidderdalii](http://thaibutterflies.com/wp-content/uploads/2016/06/Byasa-polyeuctes-e1600215916525.jpg)
♂ Chiang Dao (Chiang Mai) 30 April 2014
![](http://thaibutterflies.com/wp-content/uploads/2019/09/Byasa-polyeuctes-map.jpg)
![](http://thaibutterflies.com/wp-content/uploads/2016/06/Byasa-polyeuctes-2.jpg)
♂ Chiang Dao (Chiang Mai) 7 November 2018
![](http://thaibutterflies.com/wp-content/uploads/2016/06/Byasa-polyeuctes-polyeuctes-2.jpg)
Chiang Dao (Chiang Mai) 4 April 2023 – A normal developed with a dwarf one, probably because of the very dry season/lack of food plant
![](http://thaibutterflies.com/wp-content/uploads/2016/06/Byasa-polyeuctes-3.jpg)
♂ Chiang Dao (Chiang Mai) 16 February 2020